http://www.codewars.com/kata/54ff3102c1bad923760001f3/solutions/csharp
判断给定的字符串有多少个a e i o u
using System;
using System.Linq; public static class Kata
{
public static int GetVowelCount(string str)
{
return str.Count(x => "aeiou".IndexOf(x) != -);
}
}
public static class Kata
{
public static int GetVowelCount(string str)
{
return str.Where(c => new [] {'a','e','i','o','u'}.Any(v => v == c)).Count();
}
}
http://www.codewars.com/kata/5506b230a11c0aeab3000c1f
using System;
public class Evaporator {
public static int evaporator(double content, double evap_per_day, double threshold) {
return (int)Math.Ceiling(Math.Log(threshold / 100.0) / Math.Log(1.0 - evap_per_day / 100.0));
}
}